UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934
(Amendment No. )
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| ¨ | Definitive Proxy Statement | ||||
| x | Definitive Additional Materials | ||||
| ¨ | Soliciting Material Pursuant to §240.14a-12 | ||||
| Pfizer Inc. | |||||
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